Journal
NANO LETTERS
Volume 7, Issue 10, Pages 2966-2969Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl070814e
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Direct tensile mechanical loading of an individual single-crystal BaTiO3 nanowire was realized to reveal the direct piezoelectric effect in the nanowire. Periodic voltage generation from the nanowire was produced by a periodically varying tensile mechanical strain applied with a precision mechanical testing stage. The measured voltage generation from the nanowire was found to be directly proportional to the applied strain rate and was successfully modeled through the consideration of an equivalent circuit for a piezoelectric nanowire under low-frequency operation. The study, besides demonstrating a controlled experimental method for the study of direct piezoelectric effect in nanostructures, implies also the use of such perovskite piezoelectric nanowires for efficient energy-harvesting applications.
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